function Second(time){
  // 分钟：秒
  let h = parseInt(time/3600);
  let m = parseInt(time/3600/60);
  let s = parseInt(time%3600%60)
  return formatNumber(m)+":"+formatNumber(s)
}


const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : `0${n}`
}

module.exports = Second